A statistic summarizing the strength of association between two metric variables is called the ________.
A) product moment correlation
B) covariance correlation
C) inverse correlation
D) bivariate correlation
E) F-statistic

Question

Quizplus · Accepted Answer

The product moment correlation measures the strength of association between two metric variables by calculating the extent to which the variables vary together. This is the most common and widely used measure of correlation. The covariance correlation measures the strength of association between two variables, but it is influenced by the units of measurement and therefore not as commonly used as the product moment correlation. Inverse correlation refers to a negative correlation where as one variable increases, the other decreases, but it is not a statistic summarizing the strength of association. Bivariate correlation is a general term that refers to any correlation between two variables. The F-statistic is a statistic used in hypothesis testing to determine if there is a significant difference between group means.

A Statistic Summarizing the Strength of Association Between Two Metric